Interrupter.



No. 874,511.. PATENTED DEC. 24, 1907..

. W. KAISLING.

INTE'RR'UPTER. APPLICATION PIL EI D-JAN. 3,1907.

UNITED STATES PATENT OFFICE.

WILLIAM KAISLING, OF CHICAGO, ILLINOIS, ASSIGNOR TO MILO G. KELLOGG, OF CHICAGO, I

ILLINOIS.

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Specification of Letters Patent.

Patented Dec. 24, i907.

Application filed January 3. I907. Serial No. 350,575.

, as-are commonly employed in the automatic switches for example the first and second selectors, of automatic telephone exchange systems. The general relations of the inter rupter to the other parts of anautomatic switch of such asystem are set forth with considerable particularity in United States Patent No.831,875, dated September 25, 1906.

The general object of the present invention is to improve upon interrupters of the prior art.

More specific ob'ects are to provide such an arran ement 0 parts that positive and quick ma ing and breaking of the circuit of the interrupter will invariably be accomplished during its operation, also to provide a device which will. be durable and cheap to manufacture and which will have its parts so arranged that the will be readily accessible for the purpose of inspection or repair.

In carrying out my invention I preferably employ as the circuit breaking element of the interrupter an oscillating contact member associated with an actuating member carried by and movable with the armature and bearing upon the end of one or more of the oscillating members and provided with a cam face which cooperates in the making and break.

ing of thecircuit produced by the movement of the contact member. The nature of the invention will be more fully understood upon reference to the following detailed description taken in connection with the acc0mpanying drawing, and the scopeof the invention will be more particularly pointed out in the appended claims.

In said drawing, Figure l is a top plan view of a portion of an interrupter constructed in accordance with the present in- I vention; Fig. 2 is an end elevation of the complete interrupter; Fig. 3 a bottom plan view of the same; Figs. 4, 5 and 6 are v ews similar to Fig. 2, illustratin' different operative positions of the parts,'- igs. 7, 8, 9 and of circuits.

10 are similar views of a modified form of the invention, also illustrating the parts in difi'er-, ent operative ositions; Fig. 11 is a diagram characters refer to h e parts.

Referring in detail to the drawing, -1 desig' nates the electromagnet of the interrupter which preferably comprises a winding located upon a suitable core 2 and having one end connected to a terminal 3 and the other end to a terminal 4. The core 2 is provided with suitable pole-pieces 5 and 6 which extend transversely thereto and terminatein proximity to the armature 7 which is pivotally supported at one edge by the pivot pins 8 and 9which extend through end plateslO and 11 respectively, composed ofbrass or other suitable non-magnetic material, These plates -1 O hrou hout these views, like and 11 are secured to the pole-pieces 6 and 5 respectively by any suitable means. The terminals 3 and 12 located at one end of the magnet spool extend through and are suitably insulated from the plate 10, and the terminal 4 similarly extends through and is suitably insulated from the plate 11.

h Preferably the interrupting elements and the associated parts are mounted upon the plate 11, as illustrated, in apo'sition in whichthe various arts maybe readily inspected or removed or the purpose of re air. The interrupting. element comprises t e oscillat ing member 13 carryin near its free end, contact 14 which is ins ated from the member 13 but electricallyconnected, by means of the flexible-conductor '15, with the terminal 4 of the electromagnet. An adjustable contact 16, having the form of a screw, is

threaded through the conducting post 17 and l secured in place by a suitabl ocknut 18. The post in turn is passed throu han open-; ing in the plate 1.1 and isinsulated therefrom. The lower endof the post is rovided with a retaining nut 19 which firm y connects-the post to the late and maintains the terminal 4 20 in good e ectrical contact. The vibratory circuit of the interru ter extends from the terminal 3 through the winding of'tlie electromagnet '1, terminal 4, flexible conductor 15, contacts 1416, post v17 and .terminal 20. In this case, the terminal 12 isidle but, if desired, the terminal 20 might be electric ally connected to the terminal 12 and the latteris provided for this purpose. The 051- cil-lating contact arm '13 is ported atone end upon a brac ivotally. sup et 21 secured 7, by any suitable means as the screws 27.-

The actuating' member 24 moves to and fro with the armature and is preferably springpressed against the end of the member 13 which has its end recessed to form a guide for the said member 24. The spring pressure is brought about by the emp oyment of a leafspring 28 which engages the under side of the rearward projection 29 on the member 24 at one endand is firmly secured at its opposite end to abracket 30 which is in turn,

' secured to the plate 11 by a screw 31 and a pin 32.. The actuating member 24 is provided with .the cam face 33 which, in the resent instance, comprises two oppositely 'rected inclined surfaces' This cam face cooperates with the adjacent end of the contact member 13 to cause ositive action on its part in maintaining an quickly breaking contact between the contacts 14 and 16. From an ins ection of the drawing, it will be noted that the portion of the contact' member 13 which engages the cam face 33 ii? -positely inclined so as to form a'sort of k eedge which,together with the corresponding e e of the cam face 33 insures posltive action at a definite point in the movement of the member, 24. In addition to theinterrupting mechanism heretofore described, the projecting plate 26, carried by the armature, also carries at its outer end a driving pawl 34 which'is adapted to engage a suitable ratchet such as the ratchet-wheel 35. The pawl 34 is pivoted at 36 and its en aging end is ressed toward the ratchet 35 hy means of a eaf-spring 37, hearing at one end upon the pawl and firmly secured at its opposite end to a projection 38 of the plate 26 by suitable means'as the screws-39. The forward'end of the pawl is beveled and coijperates with the beveled stop 40 in giving a single step to the ratchet 35 upon each attraction of the armature. The stop 40 is preferably secured to the plate 11 by screws 41,

' movement of the paw-1'34 and the armature 7 is limited by a stop 42 preferably formed by turning over an adjacent portion of the In Fig. 11, a simple diagram of circuits is represented to show the function of the interruptenwhich is illustrated at 43, in its application to an automatic switch of. the t epreviously referred to. In this circuit,

- e n t swe ts flre 's i smm The return ically illustrated at 44 and 45 and the contacts, together with the winding of the interrupter, are included in circuit with a grounded source of current supply, such as the battery 46, and with the contacts 47-48 of a suitable control relay 49, the contact 48 being grounded. The control relay 49 may be, in the automatic switch above referred to, what is commonly called the private relay. From the diagram it will be seen that when the relay 49 is energized, a circuit is completed through the interrupter and this circuit, although made and broken by the action of the interrupter, is otherwise maintained as long as the relay 49 is energized. During this time, it will be seen that the armature of the interrupter will cause the ratchet 35 to advance step-by-step and this advance movement will be continued until the relay 49 is deenergized. In the diagram, circuit through the relay 49 is adapted to be initially closed by the manual 0 eration of a key 50 which is provided with t e grounded contact-51. In the diagram, 52 represents the movable contact or wiper, commonly called the private wiper, of the switch mechanism previously referred to, which is moved in response to the movements of the ratchet 35 over the associated bank contacts 53. These bank contacts are connected to trunks 54 which, in the operation of associated switch mechanism represented by the wiper 52, the circuit of relay 49 wil not beinterrupted even though key 50 be open. Thus t e vibratory circuit of the interrupter will be continued and the wiper 52 advanced over the contacts 53 to the next position This action will continue until the wiper 52 engages an un ounded contact 53 in which event the circuit of relay 49 will be interruptedand said relay be deenergized witha consequent interruption of the circuit of the in: terrupter.

During the operation above outlined, the oscillating contact member .13 will be thrown. from its engaging to its non-engaging position and vice versa, through the action of the armature 7 and the actuating member 24 carried thereby. Thus upon the attraction of the armature, the member 24 will be moved downward and, by means of the lower inclined face .of the cam 33, will force the contact member 13 downward, thus maintaining good contact between the contacts 14 and 16 until the so-called knife-edges of the cam 33 and contact member 13 just pass each other.

As soon asftlfis takes place, the upper inclined'surface of the cam 33 will, by reason of the pressure exerted upon the member 24 by the spring 28, positively and .r'apidly force its connecting parts.

. against which the member 61 strikes.

the contact member 13 upward into engagement with the stop 23.

In Fig. 4, the parts are shown with the knife-edges of the members 13 and 24 just about to pass. In other words, contact between contacts 14 and 16 is just about to be broken. tion of the awl 34 in this fi ure', this occurs at practica ly the end of t e attracted or downward movement ofthe armature and Just as soon as the knife-edges of the members 13 and 24 do pass, as previously stated, themember 13 is thrown to its open position as illustrated in Fig. 5, and the pawl and armature have completed their downward movement. Upon the return of the armature and its connected parts, the reverse action takes place between the members 13 and 24. During the greater portion of'this upward movement, the upper inclined face of the cam 33 engages the adj acent end of the member 13 and maintains it in engagement with the stop 23. This continues until the knife-edges again ass each other, at which time the lowerinc ined face of the cam 33 comes into action and positively and quickly forces the member 13 downward, thereby closing the contacts 14- 16. The point at which the knife-edges are just about to pass each other in this return movement is illustrated in Fig. 6.

In the form of the invention illustrated in Figs. 7 to 10 inclusive, the parts are practically the same as those before described ex cept that the contact member 13 is replaced by contact springs 585960, and contact member 24 is replaced by a similar member 61 which is provided with a somewhat different engaging face. The circuit through the winding of the interrupter is made and broken by the engagement and separation of the contact springs 59 and 60. Spring 59 is secured to, and movable with, spring 58, be-

.ing spaced therefrom and connected. therewith by means of an oscillating spacer 62. The stop'63 is also provided for engagement with the springs 59-60. 'The nose of the member 61 is adapted'to engage the outer end of the spring 60 which is prolonged somewhat beyond the springs 58 and 59 and is provided with a suitable oscillating piece 16ft,

ie member 61 is provided with two oppositely inclined faces 6566 and with an intervening recessed portion 67. The notch or recessed portion 67 cooperates with the spring 58, and a pin 68 secured to the plate 11 co6perates with the inclined face 65. In the o er ation of this form of the invention, t e

As will be apparent from the posi-' under side ofthe spring 58, due to theaction of the spring 28 upon the member 61. As before, the separation of the springs 59 and 60 does not take place until the armature and the pawl 34 practically reach the end of their forward movement. ment of the .armature and its connected parts, the spring 58, together with spring 59, is drawn upward. Until thespring 60 engages the stop 63, springs 59 and'60 cannot come into engagement because of the length of the inclined face as clearly illustrated in Fig. 9. Upon the further return movement of the armature and member6 1, the spring 58,'together with spring 59, is still further deflected, thus still maintaining the contact springs 59 and 60 separate. Thisseparation continues until the pin 68, by engagement with the-inclined, face 65, forces the member 61 out of engagement with the spring 58. This, as before, takes place when the armature and the pawl 34 have practically reached the end of their return movement. As-soon as the spring 58; is freed from themember 61, its resiliency is sufficient to return it and the spring 59 to normal position, thereby again establishing connection between contact springs-59 and 60.

From the'above description, it will be seer that I have provided aninterrupting device Upon the return movewhich maintains the circuit condition both upon the attraction and retraction of the armature until practically the end of the stroke of the armature is reached. It will also be observedthat I have provided. a device in which the parts are readily accessible and in which said parts are substantial and durable in construction while at the same time being com aratively economical to manufacture.

O viously many alterations and modifica tions may be made in the construction of the interrupter'herein disclosed without departing from the spirit and scope of my invention, and obviously too it is capable ofuse in,

many other relations than those ofthe autoing a primary movement in the same eneral direction as said. contact member an a secondary movement transverse thereto, and means including cooperating engaging parts on said actuating and contact members whereby said contact member is moved when said actuating member reaches a definite point in its primary movement.

contact member, and means including coop- I contact member having a movement in the same general direction as said armature, an. actuating member for said contact member crating engaging parts on said actuatingand contact members whereby the said contact member is moved when said actuating member reaches a definite point in its primary movement.

Aninterrupter comprising an electromagnet, an armature therefor; a movable moved by said armature in a primary direction and independently of said armature in a directlon transverse thereto and means 1nactuating and contact members whereby said contact member is moved when said actuating member reaches a definite point in its primary movement.

4. An interrupter comprising an electroma net, an armature therefor, a movable member is moved when said actuating mem ber reaches a definite point in its primary movement.

5. An interrupting device comprising an electromagr t, anarmature therefor, a movable.'contact member having a movement in the same general direction as said armature, an actuating memher'for said contact member moved by said armature in a primary .direction and independently ofsa'ld armature in a direction transverse thereto, and means including cooperating engaging parts on said actuating and contact: members whereby said contact member is movedwhe'n'said armature practically reaches thB .iid "Qf"'liJ B stroke.

Hiltlng the electromagnet, an armature therefor, a .mov- 'ablecontact' memberhavmg a movement in an actuating member for said contact member moved by said armature in a primary di rection and independently of said armature yieldingly pressingsaid actuating member in r'ection as said contact member and a secondary movement transverse thereto, and means including pooperating engaging parts on said actuating and contact members whereby said contact member breaks contact when said actuatin member reaches practically the end of its orward stroke and makes contact when said member reaches practically the end of its return stroke.

8. An interrupter comprising an oscillating contact member, a cooperating contact, means for limiting the movement of said member, an actuating member having a toand-fro primary movement in the same general direction as said contact member and a secondary movement transverse thereto, means for limiting theprimarymovement of. said actuating member, means for yieldingl'y pressing said actuating member toward said contact member, and means including cooperating enga ing parts on said actuating and contact mem ers whereby the contact member breaks contact when said actuating memstroke and makes contact when said 1. emb'er reaches practically. theend of its return stroke;

9. An interrupter comprising an electromagnet, an armature therefor, an oscillating contact member having 'a movement in the cooperating contact, an actuating member for said contact member moved to and fro by said armature in a primary direction and independently of said armature in a direction transverse thereto, and means including c0 operating engaging parts on said actuating and contact members whereby said cont-act member reaches practically the end of its forward stroke and makes contact when said turn stroke.

magnet, an armature therefor, anoscillating pontactimember having a movement in the l 6. An interrupting device comprising an the same general direction. as said armature in a direction transverse thereto, means for its secondary direction of movement toward an actuating member having a t o-and-fro primary movement in the same general d1 -ber reaches practically the end of its f0 ward same general direction as said armature, a

m'ember breaks contact when said actuating member reaches practically the end of its resame general direction as said armature, va cooperating contact, an actuating member for said contact member moved to and fro by said armature in a primary direction and independently of said armature in a direction transverse thereto, means for ,yieldingly ressing said actuating member in its secon ary direction. of movement toward said contact member, and means including coo crating engaging parts on said actuating ancfco'ntact members whereby said contact member breaks contact when said actuating member reaches ractically the end of its forward stroke and makes contact when said member reaches practically the end of its return stroke.

11. An interrupting device comprising an electromagnet, an armature therefor, an oscillating contact member having amovement in the same general direction as said armature, a cooperating contact, an actuat-' ing member for said contact member moved to and fro by said armature in a primary direction and independently of said armature in a direction transverse thereto, and means including cooperating engaging parts on said actuating and contact members whereby said contact member breaks contact when said actuating member reaches practically the end of its forward stroke and makes contact when said member reaches practically the end of its return stroke.

12. An interrupting device com' rising an electromagnet, an armature there or, an oscillating contact member having a movement in the same general direction as said armature, a cooperating contact, an actuating member for said contact member moved to and fro by said armature in a primary direction and independently of said armature in a direction transverse thereto, means for yieldingly pressing said actuating member 1n its secondary direction of movement to- Ward said contact member, and means including cooperating engaging parts on said actuating and contact members whereby said contact member breaks contact when said actuatin member reaches practically the end ofits orward stroke and makes contact when said member reaches practically the end of its return stroke.

13. An interrupter having-an oscillating contact member and an actuating member movable over the end of said contact member and yieldingly pressed into engagement therewith and having a cam surface for engaging said member so shaped as to force saidoontact member to its alternate position with a snap movement upon the operation of said actuating member. 7

14. An interrupter having an oscillating contact member and an actuating member movable over the end of said contact memher and yieldingly pressed into engagement therewith and having a cam surface for en gaging said contact member so shaped as to positively-hold said contact member in one of its limiting positions during the movement of said. actuating member until a definite point is reached and then to positively move said contact member to its alternate position with a snap movement.

,15. An 'nterrupter comprising an electromagnet, an armature therefor, an oscillating contact member and an actuating member moved by said armatureover the end of said contact member and yieldingly pressed into engagement therewith and having a cam surface for engaging said contact member so shaped as to force said contact member to its alternate position when said armature practically reaches the end of its stroke.

16. An interrupter comprising an electromagnet, an armature therefor, an oscillating contact member and an actuating member moved by said armature over the end. of said contact member and yieldingly pressed into engagement therewith and. having a cam surface for engaging said contact member so shaped as to positively hold said contact member in one of its limiting ositions until said armature practically reac es the end of its stroke and then to positively move said contact member to its alternate position with a' snap movement.

17. An interrupter comprising a movable contact member, an actuating member having a movement inv a direction transverse to that of said contact member, and means whereby said contact member is moved when said actuatingmember reaches a definite point in its movement.

contact carried by said plate, an armature, a

projection of said armature lying close to and movable in a plane parallel to said plate, and an actuating member extending from said projection into operative relation with said contact member. V

. In Witness whereof, I hereunto subscribe my name this 31st day of December, 1906.

. WILLIAM KAISLING.-

WitneSsesz I L. D. KELLOGG, G. E. MUELLER. 

